# 月の満ち欠けAR＋ vs Math Brain

The clearest difference is ads: 月の満ち欠けAR＋ at none against Math Brain's shown. 月の満ち欠けAR＋ also leads on monetization model (free vs ad-supported). Math Brain's advantage is update cadence (weekly vs every 5 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

月の満ち欠けAR＋ ships an update every 5 weeks, Math Brain weekly. The most recent releases landed on October 9, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | 月の満ち欠けAR＋ | Math Brain |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-brain-handwriting-drills/id1623538548/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 weeks | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 69 MB | 82 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Hiroyuki Nakano](https://appshunter.io/developer/1091174971) | [Ryuichi Aida](https://appshunter.io/developer/1553473481) |

## What reviewers say

### 月の満ち欠けAR＋

[App page](https://appshunter.io/ios/app/ar/id1511461024)

This app uses augmented reality to visualize the relationship between the sun, moon, and Earth. It allows users to observe lunar phases and celestial movements from various perspectives, including a ground-level view.

**Highlights:** AR visualization of sun, moon, and Earth, Observe lunar phases from 8 positions, Simulate moon's orbit, Realistic surface textures for Earth and Moon, Adjustable celestial body scale, Ground-level observation mode, Avatar for user perspective

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Brain

[App page](https://appshunter.io/ios/app/math-brain-handwriting-drills/id1623538548)

This app offers a fun, game-like approach to mastering basic arithmetic. Users can practice addition, subtraction, and multiplication by handwriting answers in interactive grids. Track your progress, compete with others globally, and improve math skills through intuitive gameplay.

**Highlights:** Handwritten math input, Daily progress charts, Global user rankings, Competitive mode, Multiple game modes (5x5, 10x10), Addition, subtraction, multiplication practice

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 月の満ち欠けAR＋ free?

月の満ち欠けAR＋ is free to download, with no in-app purchases.

### Is Math Brain free?

Math Brain is free to download, with no in-app purchases.

### Do 月の満ち欠けAR＋ or Math Brain have ads?

Math Brain shows ads; 月の満ち欠けAR＋ does not.

### Which is updated more often, 月の満ち欠けAR＋ or Math Brain?

月の満ち欠けAR＋ ships an update every 5 weeks, and Math Brain weekly. Most recently, 月の満ち欠けAR＋ was updated on October 9, 2026 and Math Brain on September 29, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*